{"title":"κ-疯狂和可定义性","authors":"Haim Horowitz, Saharon Shelah","doi":"10.1002/malq.202100074","DOIUrl":null,"url":null,"abstract":"<p>Assuming the existence of a supercompact cardinal, we construct a model where, for some uncountable regular cardinal κ, there are no <math>\n <semantics>\n <mrow>\n <msubsup>\n <mi>Σ</mi>\n <mn>1</mn>\n <mn>1</mn>\n </msubsup>\n <mrow>\n <mo>(</mo>\n <mi>κ</mi>\n <mo>)</mo>\n </mrow>\n </mrow>\n <annotation>$\\Sigma ^1_1(\\kappa )$</annotation>\n </semantics></math> κ-mad families.</p>","PeriodicalId":49864,"journal":{"name":"Mathematical Logic Quarterly","volume":"68 3","pages":"346-351"},"PeriodicalIF":0.4000,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"κ-Madness and definability\",\"authors\":\"Haim Horowitz, Saharon Shelah\",\"doi\":\"10.1002/malq.202100074\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Assuming the existence of a supercompact cardinal, we construct a model where, for some uncountable regular cardinal κ, there are no <math>\\n <semantics>\\n <mrow>\\n <msubsup>\\n <mi>Σ</mi>\\n <mn>1</mn>\\n <mn>1</mn>\\n </msubsup>\\n <mrow>\\n <mo>(</mo>\\n <mi>κ</mi>\\n <mo>)</mo>\\n </mrow>\\n </mrow>\\n <annotation>$\\\\Sigma ^1_1(\\\\kappa )$</annotation>\\n </semantics></math> κ-mad families.</p>\",\"PeriodicalId\":49864,\"journal\":{\"name\":\"Mathematical Logic Quarterly\",\"volume\":\"68 3\",\"pages\":\"346-351\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2022-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mathematical Logic Quarterly\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/malq.202100074\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"LOGIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematical Logic Quarterly","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/malq.202100074","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"LOGIC","Score":null,"Total":0}
期刊介绍:
Mathematical Logic Quarterly publishes original contributions on mathematical logic and foundations of mathematics and related areas, such as general logic, model theory, recursion theory, set theory, proof theory and constructive mathematics, algebraic logic, nonstandard models, and logical aspects of theoretical computer science.